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first_lineno 

        # RubyVM::InstructionSequence.first_lineno

(from ruby core)
### Implementation from InstructionSequence
---
    first_lineno()

---

Returns the number of the first source line where the instruction
sequence was loaded from.

For example, using irb:

    iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
    #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
    iseq.first_lineno
    #=> 1

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.